SiBE041134 Indoor UnitRemoval Procedure 1271.8 Removal of Indoor Heat ExchangerProcedure Warning Be sure to wait for 10 minutes or more after turning off all powersupplies before disassembling work.Step Procedure Points1. Disconnect the refrigerantpiping.Preparation Remove the electrical boxaccording to the “Removalof Electrical Box”.CautionBe sure to stop thecompressor beforedisconnecting the refrigerantpipe. If the refrigerant pipe isdisconnected with thecompressor running and thestop valve opened, air may besucked in to generate anover-pressure in refrigerationcycle, thus resulting in piperupture or accidental injury. If the drain hose isembedded in the wall,disconnect the drain hosebeforehand.1 Remove the screwswhich fix the indoor unitto the installation plate.2 Lift the indoor unit witha wooden base.3 Pull out the drain hose. Place a plastic sheet underthe drain hose as remainingdrain may leak.4 Disconnect the flare nutfor gas piping. Carry out the removal workwith 2 wrenches.CautionFrom the viewpoint of globalenvironmental protection,make sure to use a vacuumpump for air purging. When the pipings aredisconnected, protect theboth openings from enteringmoisture.(R12174)(R12175)Wooden baseDrain hoseExtension drain hoseConnecting wires (R12176)(R12177)
